我有一个具有一些属性的无状态 bean：

我的应用服务器 (Weblogic) 生成了这个名称 (jndiName/mappedName)：

我不能使用注入，所以我会用这个名字进行查找。

问题是：如果我保持相同的 EAR、JAR、类和接口名称，这个名称总是相同的吗？或者它可以从应用服务器改变？

The question is: this name always will be the same if I maintain the same EAR,JAR,Class and interface name? Or it can change from application servers?

JNDI 名称在 Java EE 5 中没有标准化，并且会从一个应用服务器更改为另一个。 Adam Bien 写了一篇很好的文章来说明这一点：

EJB 3 Portability Issue: why JNDI names are not standardized?

As I mentioned in my previous post,
the portability of Java EE 5
applications is much better, than in
the old J2EE 1.4 world. I found one
issue, which causes some effort - the
lack of defined and unified
JNDI-Naming and addressing. The
glassfish applicationsserver uses the
fully qualified name of the
remote business interface as default.
The JBoss appserver uses the name of
the EJB with the"/remote" ending. So
the following Session Bean:

1 2 3 4 5 6 7 8 9

package com.abien; @Stateless public class HelloWorldBean implements HelloWorld {     public String sayHello(String hello){         return"Echo from server:";     } }

can be found with JBoss (with EJB3
support) using the following
code-snippet:

1 2	Context context = new InitialContext(); HelloWorld helloWorld = (HelloWorld) context.lookup("myEarName/HelloWorldBean/remote");

and Glassfish (v1 and v2), using the
fully qualified name of the
remote-business interface:

1 2	Context context = new InitialContext(); HelloWorld helloWorld = (HelloWorld) context.lookup(HelloWorld.class.getName());

处理这个问题的一个不错的方法是使用 ServiceLocator 和"可插入"应用程序服务器特定的策略。看看 ServiceLocator、JNDI Naming Helper 和 Java EE 5。

在 Java EE 6 中，事情得到了解决，我们终于有了可移植的全局 JNDI 名称。